Topics / Environment
Ozone Depletion
Asked 2 times in UPSC Prelims · first asked 2011 · last asked 2015
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Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?
2015Environment
Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?
Explanation
The Montreal Protocol is a global agreement aimed at safeguarding the ozone layer by gradually eliminating the manufacture of various substances that contribute to ozone depletion.
The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
2011Environment
The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
Explanation
In the Antarctic region, the ozone hole forms due to a reaction between nitric acid in polar stratospheric clouds and chlorofluorocarbons (CFCs). This reaction leads to the formation of chlorine, which then catalyzes the photochemical destruction of ozone.